Alert archive / Texas / Severe Thunderstorm Watches in 2000

Severe Thunderstorm Watch 98

March 16, 200026 counties in Texas

The Storm Prediction Center issued this severe thunderstorm watch at Mar 16, 2000, 7:15 PM CST for 26 counties in Texas. It was in force for 5 hr.

The area

The outline as issued.

The facts

Issued: Mar 16, 2000, 7:15 PM CST (01:15 UTC)
Expired: Mar 17, 2000, 12:00 AM CST
In force: 5 hr
Issued by: the Storm Prediction Center

All 26 counties

Anderson County, TX, Camp County, TX, Cass County, TX, Cherokee County, TX, Collin County, TX, Dallas County, TX, Ellis County, TX, Franklin County, TX, Freestone County, TX, Gregg County, TX, Henderson County, TX, Hill County, TX, Hopkins County, TX, Hunt County, TX, Kaufman County, TX, Limestone County, TX, McLennan County, TX, Morris County, TX, Navarro County, TX, Rains County, TX, Rockwall County, TX, Smith County, TX, Titus County, TX, Upshur County, TX, Van Zandt County, TX, Wood County, TX

The radar

The Dallas/Ft Worth radar (KFWS), 97 km from the middle of the area, began a volume at 01:15 UTC, the scan nearest the moment this went out.

Open the radar archive at this moment

The archived warnings, watches and discussions in force at that minute are drawn over the scan, this one among them.

Warnings issued inside it

3 tornado, severe thunderstorm and flash flood warnings for its counties while it was in force.

Issued	Product	Office	Counties	Lasted
Mar 16, 7:45 PM CST	Severe Thunderstorm Warning	FWD	Dallas, Ellis	60 min
Mar 16, 8:43 PM CST	Severe Thunderstorm Warning	FWD	Dallas	47 min
Mar 16, 9:15 PM CST	Severe Thunderstorm Warning	FWD	Collin	45 min

The nearest sounding before it

Fort Worth, TX (KFWD), launched 00:00Z, 1.3 hours before the alert went out and 112 km from the middle of its area. This is the routine balloon launch nearest before it, the air the forecaster had in hand, not a measurement taken for the alert.

Skew-T log-p

Temperature in red, dew point in green, the mixed-layer parcel dashed.

Hodograph

The wind turning with height, colored by layer: ground to 1 km, 1 to 3 km, 3 to 6 km, 6 to 10 km.

Mixed-layer CAPE: 1 J/kg
Mixed-layer CIN: No buoyant parcel
Mixed-layer LCL: 536 m above ground
0-6 km bulk shear: 44 kt
0-1 km storm-relative helicity: 286 m²/s²
0-3 km storm-relative helicity: 473 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 2.5

Open this sounding in Storm Lab

The text

As transmitted, in the capitals the NWS used until 2016.

801 
WWUS9 KMKC 170054
SEL8  
MKC WW 170054
TXZ000-170600-

URGENT - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WATCH NUMBER 98
STORM PREDICTION CENTER NORMAN OK
654 PM CST THU MAR 16 2000

THE STORM PREDICTION CENTER HAS ISSUED A
SEVERE THUNDERSTORM WATCH FOR PORTIONS OF

   NORTH CENTRAL AND NORTHEAST TEXAS                              

EFFECTIVE THIS THURSDAY NIGHT FROM 715 PM UNTIL MIDNIGHT CST.

HAIL TO 2 INCHES IN DIAMETER...THUNDERSTORM WIND GUSTS TO 60
MPH...AND DANGEROUS LIGHTNING ARE POSSIBLE IN THESE AREAS.

THE SEVERE THUNDERSTORM WATCH AREA IS ALONG AND 75 STATUTE MILES
EAST AND WEST OF A LINE FROM 40 MILES EAST SOUTHEAST OF WACO TEXAS
TO 70 MILES NORTH OF TYLER TEXAS.

REMEMBER...A SEVERE THUNDERSTORM WATCH MEANS CONDITIONS ARE
FAVORABLE FOR SEVERE THUNDERSTORMS IN AND CLOSE TO THE WATCH AREA. 
PERSONS IN THESE AREAS SHOULD BE ON THE LOOKOUT FOR THREATENING
WEATHER CONDITIONS AND LISTEN FOR LATER STATEMENTS AND POSSIBLE
WARNINGS.

OTHER WATCH INFORMATION...  CONTINUE...WW 96...WW 97...

DISCUSSION...ELEVATED HAILSTORMS CONTINUE TO DEVELOP JUST WEST OF
THE SURFACE COLD FRONT OVER NORTH CENTRAL TEXAS.  DYNAMIC FORCING
ASSOCIATED WITH LEFT EXIT REGION OF UPPER LEVEL JET AND INSTABILITY
ALOFT EXPECTED TO MAINTAIN SEVERE THREAT THROUGH THE EVENING HOURS.


AVIATION...A FEW SEVERE THUNDERSTORMS WITH HAIL SURFACE AND ALOFT
TO 2 INCHES.  EXTREME TURBULENCE AND SURFACE WIND GUSTS TO 50
KNOTS.  A FEW CUMULONIMBI WITH MAXIMUM TOPS TO 400.  MEAN STORM
MOTION VECTOR 24030.


...WEISS

312,0975 332,0964 332,0940 312,0951

SPC that day

Everything else SPC issued on the same UTC day.

Issued	Product	Office	Counties	Lasted
Mar 16, 8:00 PM CST	Severe Thunderstorm Watch	SPC	Austin, Bastrop, Bell, Brazos, Burleson, Caldwell and 30 more	4 hr

Nearby

Severe Thunderstorm Watches in Texas, 2000 Every severe thunderstorm watch in 2000

Sources

The product and its follow-ups from the Iowa Environmental Mesonet's archive of National Weather Service and Storm Prediction Center text; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.